﻿using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace WriteTextFile
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            // Compose a string that consists of three lines.
            string lines = "First line.\r\nSecond line.\r\nThird line.";

            // Write the string to a file.
            System.IO.StreamWriter file = new System.IO.StreamWriter(".\\test.txt", true);
            file.WriteLine(lines);

            file.Close();
        }
    }
}
